Keys To Summer Plant Growth Regulator Success

The switch from spring crops to summer crops can be a challenge for growers because of increased day length and day/night temperatures. Plants grown during long days and in warm temperatures with a robust fertility program will exhibit the following: good growth and more good growth. Warm summer evenings will generally add to stem elongation on most plants. PGRs (plant growth regulators) can play a key role in reducing unwanted stretch and can help carry-over crop inventory if the weather slows sales down for a period of time.

A good example would be late spring production of violas or pansies. As the weather warms up, violas can stretch and get rather loose in growth. You may find the normal rate of 2-3 PPM Paczol® (paclobutrazol) sprayed is not enough to control stretch and you may need to increase the rate to 3-5 PPM or higher depending on conditions. Using one-half the normal PGR rates on crops is a good tool for holding plants over for a short period of time. You could use this technique during slow sales periods or excess inventory.

A tip to remember — if your crop is mostly leaves (few stems exposed) then PGRs like B-Nine® or Cycocel® are best. Both are absorbed thoroughly through leaves. If the crop has smaller leaves and good stem exposure, then Paczol should be considered. Paczol is not leaf absorbed; it is absorbed through stems and roots. If your crop is a real challenge to control, using Paczol as a drench is a very effective tool. Paczol spray-to-drench rates are a 10 to 1 factor–i.e. a 10 PPM Paczol spray is roughly the same as a 1 PPM Paczol drench.

While you’re growing your summer crops, you may want to begin planning out your fall crops such as mums and poinsettias. Mums and poinsettias respond well to BNine or Cycocel applications. A late season drench application of Paczol is a proven method to control late season stretch (early November, depending on your climate) of poinsettia crops.

These and other methods can help you manage plant growth and produce a great crop. For more information, visit our website at www.ohp.com.

Leave a Reply

More From Crop Inputs...
Aphids

July 7, 2017

New Tools for Your Crop Protection Arsenal in the Greenhouse

Over the past few months, crop protection companies have developed several new products designed to help you manage a wide range of insect and disease pests. Here’s a look at some of them.

Read More
Yellow Stick Card for thrips

July 5, 2017

Tips From a Top 100 Grower for Effective Thrips Control

A combination of conventional materials and biologicals can help provide season-long management of thrips in hanging baskets.

Read More
Magnesium deficiency on poinsettia

July 4, 2017

How to Manage the 3 M’s of Poinsettias: Manganese, Molybdenum, and Magnesium

Proper nutrition is a critical part of successful greenhouse production. Managing these three key elements properly will keep your poinsettia crops healthy and strong.

Read More
Latest Stories
Aphids

July 7, 2017

New Tools for Your Crop Protection Arsenal in the Green…

Over the past few months, crop protection companies have developed several new products designed to help you manage a wide range of insect and disease pests. Here’s a look at some of them.

Read More
Yellow Stick Card for thrips

July 5, 2017

Tips From a Top 100 Grower for Effective Thrips Control

A combination of conventional materials and biologicals can help provide season-long management of thrips in hanging baskets.

Read More
Primula acaulis, Botrytis, Disease, Griffin Greenhouse Supplies

May 30, 2017

BioWorks Launches New Biofungicide for Botrytis Control

BotryStop was developed for the control of pathogens such as Botrytis, Sclerotinia, and Monilinia in several crops, including ornamentals.

Read More
Adult Aphidoletes in web - Feature

May 27, 2017

How to Overcome Biocontrol Challenges by Thinking Outsi…

With a little creative thinking and adjustments to your strategy, you can overcome your greenhouse biocontrol challenges.

Read More
Cannabis Seedling

May 20, 2017

Biocontrols: A Practical Option for Cannabis

With limited options for chemical pest control, cannabis growers are incorporating biocontrols into their integrated pest management programs. More education will cement this solution as a viable option in this emerging market.

Read More
Christmas Cactus

May 18, 2017

How to Increase Branching and Flower Bud Production of …

Based on research completed at North Carolina State University, here are some methods for increasing branching and flower bud production of Christmas Cactus (Schlumbergera bridgessii).

Read More
Herbicide Drift in the Greenhouse

May 15, 2017

How to Identify and Mitigate Herbicide Contamination in…

Herbicides applied off-site or within the greenhouse can significantly damage ornamental and edible crops. Beth Scheckelhoff, an Extension Educator for Greenhouse Systems at The Ohio State University, provides some examples and basic recommendations for mitigating and preventing herbicide contamination and injury in the future.

Read More

May 4, 2017

Bayer Altus Update: Neonic Insect Control Alternative N…

Altus, a butenolide class insecticide with the active ingredient flupyradifurone, will be available beginning May 1, and is labeled for greenhouse and nursery use on ornamental plants, vegetable transplants, and indoor vegetable production.

Read More
Bumblebees

May 2, 2017

Pollinator Update: The Bumblebee on the Endangered List…

With plenty of attention being placed on pollinator health around the country and the world, here’s what you need to know.

Read More
Florikan Space Technology Hall of Fame

April 25, 2017

Out-Of-This-World Plant Nutrition: Fertilizer Company I…

NASA scientists are growing vegetables on the International Space Station using Florikan’s controlled release fertilizer.

Read More
OHP Biosolutions

April 8, 2017

OHP Enters Biocontrols Market With New Product Line

The OHP Biosolutions program will feature insecticides, fungicides, and other products designed to address the expanding segment of growers who use biological products.

Read More
Dramm Low Volume Coldfogger Sprayer

April 2, 2017

Dramm Upgrades Its Coldfogger Low-Volume Sprayer to Imp…

Dramm recently updated its Coldfogger, a targeted low-volume sprayer, to a new model that offers a more durable pump that is easier to use and allows for the use of corrosive chemistries.

Read More

March 20, 2017

AgBiome’s New Zio Biofungicide Receives EPA Regis…

The new biofungicide is the first product from AgBiome, and will be marketed by SePRO Corp. in the ornamentals market.

Read More
Oat Grass Banker System feature

March 20, 2017

How You Can Market the Benefits of Biocontrols

Educating retailers and end consumers about the use of biocontrols and why it’s important has helped Fessler Nursery gain new customers and profits.

Read More

February 28, 2017

OHP Launches New Ovicide/Miticide, Announces Partnershi…

Applause is a new miticide that targets eggs and immature stages of several mite species. Through the Vestaron partnership, OHP will market Spear-O, a toxin-derived bioinsecticide.

Read More

February 26, 2017

AgBiome Will Enter the Ornamentals Market With a New Bi…

AgBiome, a young company with teammates steeped in decades of experience in the crop protection world, sees an opportunity to bring products to market that fill the existing gaps in plant protection. The company has partnered with SePRO to market and distribute Zio, a biological fungicide expecting EPA registration this spring.

Read More
Tomato Spotted Wilt Virus on Osteospormum

February 23, 2017

4 Pathogens to Prepare For in 2017

Early detection of disease and virus symptoms in the greenhouse is critical. One expert says there are a few pathogens in particular that growers should be monitoring.

Read More
Boxwood Blight

February 7, 2017

Boxwood Blight Detection in Illinois Has Growers on Ale…

Symptoms of boxwood blight, which can spread quickly in production facilities, include leaf spots, stem cankers, and defoliation.

Read More